Hysteresis in particulate recording media. Experiment and simulation with Preisach and Jiles-Atherton models

Tn order to describe the magnetisation processes in particulate media some new variants for the Jiles-Atherton model are developed. The differences be tween these models and the Preisach model are discussed. Due to the analogy between the parameters of the two model's, the Jiles-Atherton model's para meters may be determined using the Preisach model's identification methods. A good agreement between the simulated and the measured data is observed f or the major hysteresis loop but it is no longer good for some more complex magnetisation processes. (C) 1999 Elsevier Science B.V. All rights reserve d.